Engineering, 12.07.2019 22:10 Kizmit4938
Apiston-cylinder device contains 1.329 kg of nitrogen gas at 120 kpa and 27 degree c. the gas is now compressed slowly in a polytropic process during which pv^1.49 = constant. the process ends when the volume is reduced by one-half. determine the entropy change of nitrogen during this process.
Answers: 1
Engineering, 04.07.2019 16:10
An electrical motor raises a 50kg load at a construct velencity .calculate the power of the motor, if it takes 40sec to raise the load through a height of 24m(take g =9.8n/g)
Answers: 2
Engineering, 04.07.2019 18:20
Amixture of slurry and mud is to be pumped through a horizontal pipe of diameter 500 mm. the fluid behaves as a bingham plastic with a yield stress of 30 pa and viscosity 0.04 pa.s. describe the effects of the shear stress through a transverse section of the pipe by plotting the variation in shear stress and velocity profile: (i) just before the slurry starts to move (ii) as the slurry flows when the pressure gradient is double that in part (i)
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Engineering, 04.07.2019 19:10
Apressure vessel with an r/t 20 cannot be treated as thin walled vessel. a)-trune b)- false
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Engineering, 04.07.2019 19:10
With increases in magnification, which of the following occur? a. the field of view decreases. b. the ambient illumination decreases. c. the larger parts can be measured. d. the eyepiece must be raised.
Answers: 1
Apiston-cylinder device contains 1.329 kg of nitrogen gas at 120 kpa and 27 degree c. the gas is now...
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